Carbureter.



B. N. PIERCE.

GAEBURETER.

APPLICATION FILED SEPT. 19, 1907.

L T E E E H. T E I B 2 WITNESSES:

INVENIZOR ATTORNEY.

B. N. PIERCE. GABBURETEB.

APPLIOATIOH FILED SEPT. 19 1.901. 973,877. Patented Oct.25, 1910.

2 BKEET8-BHEET 2.

WITNESSES: 11v vEN TOR.

ATTORNEY.

. UNITED STATES PATENT OFFICE...

BURT NEULON PIERCE, OF INDIANAPOLIS, INDIANA.

CABBURETER.

' of Indianapolis, county of Marion, and State of Indiana, haveinvented'a certain new and useful Carbui-eter; and I do hereby declarethat the following is a. full, clear, and exact description thereof,reference being had to ltheaccompaiiying drawings, in which like lettersrefer to like parts.

' The object of this invention is to improve "fthe construction ofcarbureters for use in connection with gasolene engines and the like;

The chief feature of the invention consists i i-the provision of a wingvalve within the mixingcha'mbcr', located in close proximity tothe fuelinlet and extending across said .mixing chamber, which valve is actuatedautomatieallybythe suction from the engine, and-when thus actuated, thegeneration 0f gas'will be increased in proportion to the movement of thewing valve from normal position, as such movement of the wing valveincreases tliepassage-way and, therefore, the efie'ct of the suction ofthe engine in bringing air, and gasolene or other fuel into the mixingchamber. Therefore the volume of "gas created by theca-rbureter isimmediately 'cordance with its needs.

controlled within reasonable limits by t e suction of the engine in ac-Vhen the wing 'val 've is actuated thus by the suction of the engine,the lower part nearest the fuel inlet.

is movedback of the fuel inlet so that the fuel inlet will be on thesuction side of the valve and thus the fuel supply in thei'nixingchamber be proportionately increased. Like- .wise the upper and largerpart. of the valve is swung open so. as to increase thepassagecombination of 'the wing valve and the this combination isthrottle valve whereby the person di'ivin (Y "the engine can modify,change or coi ti'dl largely the efiect of the suction of the en ne uponsaid wini valve. The' result of t at the speed of the engine, from the:highest speed to the very owest speed, can'be wholly controlled by thesetwo valves. And this is true in the of automobiles and motor boats evenwhen the transmission gearing is at its highest. a

Another in constructing the carbureter of two cylinzdrica-l parts thatwill keep them clamped toone side of said feature of the inventionconsists gether wheieby the carbureter can be easily combined with theengine and with the gasolene supply in whatever be located. '-It adaptst e carbureter for ready use in connection with any engine.

Another feature of the invention consists in counterbalancing theirregular actions of the float upon the gasolene supply valve by aspring, whereby the action of the valve will be rendered more uniformespecially when the float is shaken or tilted suddenly.

These and the other features of the invention will beuiiderstood from'the accompanying drawings and the following description and claims.

In the drawings Figure 1 is a side elevation of thecarbureter. Fig. 2 isa'eentral vertical section tlieretlirough, the changed position of thewing valve being shown in dotted lines. Fig.3 is a central verticalsection through the fuel inlet to mixing chamber, the same being shownupon an enlarged scale and parts broken away. Fig. 4-is a plan view "ofthe device. Fig. 5 is a side eleposition they may Specification ofLetters Patent. Patented 0 1; 25 191() Application flied September 19,1907. Serial No. 398,627.

vation of the u per removable portion of the device, parts eing brokenaway. Fig. 6 is a central vertical section of the device on a line at aright angle to the section shown in Fig. 2.

' This device consists essentially of two parts, a bowl 10 for thegasolene and float, and a shcll 11 forming the mixing chamber andcarrying the adjacent parts. These two are separable and removable andone turns upon the other to any desired position. Thus the bowl 10 issubstantially in the sha )e of a cup with a rim symmetrically and cyindrically formed and with a thickened portion 12 centrally located inthe bottom thereof with a central vertical 0 eiiing therethrou' h. To

ody' 10, positioned what like the handle of a cup, a casing 13 isprovided with a vertical gasolene inlet port 14' that is closed by avalve 15, somewhat somelike aneedlevalve,- that is mounted with a isfulcrumed on a pin 18, the long end of said lever being secured 'to anannular float 'pivot 16 on the short end of a lever 17 that controlledby a spring 20 on an extension 21 from the valve'15, the tensionof saidspring tension 21. A cap 23 closes: an opening 20 being regulated by a.nut-22'on said ex;

reiiiovailofthe ca 23. The gasolene supply is brought ,to t e devicethrough the niple 24. Thus-it is observed that the irreguarities in-themovements of the float 19 are controlled, steadied, and largely overcomeby the action of the spring 20 'on the short end of the lever 17, saidspring'tending to hold the valve in its normal position.

The shell 11 is semispherica-l on its undersideand provided with acylindrical peripheral flange 25 that fits snugly upon the top of thebowl 10. Centrallyfrom the lower end of said bowl there is a downwardtubular extension 26 that passesthrough the opening in the enlargement12 in the bottom of the bowl. and said extension 26 1s threaded on itsouter end for a nut 27 whereby said two parts 10 and 11 may be drawn andheld tightly together after adjustment. The shell ll. which forms themixing chamber has additional parts 'or members 30 and 31. secured bybolts 32. said parts being turned somewhat L-shaped and attached at anangle to said shell so that the position of said added members may bealtered to assist in the fuel supply and then the shell 11 turned onsaid bowl 10 to any desired position to accommodate its connection withthe engine, and when thus adjusted, the nut 27 will tighten and holdsaid parts in place. Likewise the air inlet can be turned towardtheengine so as to getwarm air.

The tubular extension :26 from the lower end of the. shell '11 isprovided with a pair of oppositely located ports 35 for the admission ofgasolene from the bowl 10. A tape?- ing fuel inlet nozzle 30 is screwedinto the upper end of the tubular extension 26 so as to project. upinto-the mixing chamber in the shell 10. The port thercthrough closed bya needle valve 37 that at its lower end is screw-threaded to fit andscrew through an internally threaded nut 38. There is also 'a waste tube39 extending down'through the extension 26 and parallel with the valveSt9llt'37. the upper end of said waste tube 2''!) extending above thebottom of the shell 1t to a point slightl below the up )er end of thenozzle so as to form a puddle chamber about the fuel inlet in whichthere will be fluid standing up almost to the upper end of the nozzle.This is a matter of considerable importance inthe etlectivc operation ofthe device that lea vcs in ita priming charge.

'ithin the mixing chamber of the shell ll-and immediately over the fuelinlet, a wing valve 40 is mo' 'nted on a transversely extending 'shaft4] see Fig. 6, which has bearings in the shell and one end extendsoutside the shell and carries an arm 42 against which .a spring l3 acts.Said spring is mounted on the end of arm -12 and its tension isadjustable by a screw ii that extends through a projection outside theshell 11, whereby the normal vertical position of the wing'valve 40 ismaintained; and its moveinent is limited by the stop 62 engaging theprojection 63 on the outside of the shell.

The upper part of the wing valve is ,ofconsiderably greater area thanthe lower' part, as appears in Figs. 2 and 6, so that under theinfluence of the suction of the engine the upper partof the valve willbe drawn toward the gas outlet, that is into the dotted linepositionshown in Fig. 2, the extent, of oscillation, however, of said valvedepending upon the forcefulness of the suction of the engine. when thusdrawn by suction into an inclined position, it turns the lower part ofthe valve baclnvard away from the fuel inlet so the fuel inletwill be onthe suction side of said valve and give the suction of the enginegreater power by way of dra\v-' .ing in fuel through said inlet; At thesame ated so that the gas creation will beara uni form relation with thedemand for gas. and thus render the carbureter peculiarly automatic. v a

'hile the wing valve 40 is directly and solely controlled by the suctionof the engine and in that sense is the same as automatic, still theeffect of the suction of the engine upon said-.7 valve is controlledlargely by the throttle valve 50, which is on the shaft 51, and isactuated by the throttle lever 5:2. In other words. when the throttlevalve is open, it is obvious that the etl'ect of the suction of theengine upon the wing valve 40 may be increased. This wing valveconstruction cooperating as explained with the throttle transmissionmechanism is in a high gear, I

the "(fliefxliiOll of gas with this carbureter can be so reduced andminimized that the automobile will move at the slowest possible speed.In oi words, without changing t to gear on [he automobile, its speed canbe regulated from the slowest possible moves ment to the greatest speedwith ease and abslow speed without stopping the engine or changing thegear, and this constitutes the chief feature of the invention.

to secure by Letters Patent is:

1.' A carbureter including a shell forming a gas chamber with an airinlet opening sub-- stantially at one side and a gas outlet 0 eningsubstantially at the other side, a fuc 1nlet between said air inlet andgas outlet 'openings, and a spring-controlled rocking valve mountedoversaid fuelinlet in position to substantially close said chamber, themajor portion of said valve lying on the side of the fulcruin thereofopposite said fuel inlet, whereby the suction of the engine willautomaticallyturn the larger portion of said valve above the fulcrumthereof toward the gas outlet and ,the smaller portion behind the fuelinlet end and thus increase the effect of the suction upon the fuelinlet.

2. A earbureter including a shell forming a gas chamber with an airinlet opening substantially at one side and a gas outlet openinsubstantially at the other side, a fuel in ct between said air inlet andopenings, and a spring-controlle rocking valvemounted over said fuelinlet in position to substantially close said chamber, the major portionof said valve lying on the side of the fulcrum .thereof opposite saidfuel inlet, whereby the suction of the engine will automatically turnthe lar er portion of said valve above the fulcrum thereof toward thegas outlet and the smaller portion behind the fuel inlet and thusincrease the effect of the suction upon the fuel inlet, and a throtthevalve between the gas outlet and said rocking valve for modifying theeffect of the suction of the engine upon said rocking valve.

- 3. A carbureter including a shell forming a gas chamber with an airinlet opening substantially at one side and a gas outlet open- Vl'hatiIclaim as my invention and desire.

as out let in substantially at the other side, a fuel inlet nozzleprojecting upwardly through the bottom of said shell and between saidair inlet and gas outlet openin a shaft mountedin said shell andextending transversely through said gas chamber and over said fuel inletnozzle, a wing valve secured to said shaft so as to be normally verticalover the fuel inlet and with the art thereof below the fulcrum beingpartiall y cut away so that it will'be smaller than the art of saidvalve above the fulcrum thereo a spring acting on said shaft tending toprevent the movement of the upper part of said valve toward the gasoutlet, and a stop for limitiu the' return movement of said valve and hedin the same substantially vertical over sai fuel inlet nozzle, wherebythe valve can be actuated .by the suction of the engine and then saidfuel inlet nozzle will be on the suction side of the valve,substantially as set forth.

4. A carbureter including a asolene bowl,

' with a cylindrical open top an with a central o )ening through thebottom thereof, a shell or forming the gas-creating chamber adapted tofit upon and extend down into said bowl and with a tubular v extensiontherefrom through the opening in the bottom of said bowl, whichextension is threaded on its outer end, a nut on the outer end of saidextensioirwhereby said parts may be adjusted and held inrelativepositions, a fuel inlet passage way from the bowl through saidextension into the chamber within said shell, a valve in said extensionand operable from the outside for closin said fuel' inlet port, and awaste tube lea ing from the chamber within said shell, said waste tubeextending above the bottom of the shell to a point slightly lower thanthe upper end of the nozzle.

In witness whereof, I have hereunto af fixed my signature in thepresence of the witnesses herein named.

BURT NEULON PIERCE. Witnesses:

Ouve Bin-moan, N..Am.xnonc.

